New Type of Diffraction Elastic Constants for Stress Determination

Author:

Baczmanski Andrzej1,Tidu Albert2,Lipiński Paul3,Humbert Michel2,Wierzbanowski Krzysztof1

Affiliation:

1. AGH University of Science and Technology

2. Université de Metz

3. Ecole Nationale d’Ingénieurs de METZ

Abstract

A new method for calculation of the diffraction elastic constants, based on the selfconsistent model, is proposed and tested. This method is especially useful in the interpretation of the results of X-ray measurements since the ellipsoidal inclusion near the sample surface is considered. In X-ray diffraction the information volume of the sample is defined by absorption, causing unequal contribution of different crystallites to the intensity of the measured peak. Consequently, the surface grains participate more effectively in diffraction than the grains which are deeper in the sample.

Publisher

Trans Tech Publications, Ltd.

Subject

Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science

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